fix: resolve installer stall and add clear completion signal (#91)

* fix: resolve installer stall and add clear completion signal

After the last wizard prompt, Node's event loop stayed alive because
promptChoiceList resumed stdin via emitKeypressEvents but never paused
it in cleanup(). The process appeared hung even though all output had
been written. Users had to force-quit before reading the completion text.

- pause stdin in promptChoiceList cleanup so the event loop can drain
- add process.exit() under IS_MAIN as a hard backstop against future leaks
- upgrade completion banner to bold green ✓ and add an explicit
  "Setup complete — this session will now exit." line so users know the
  wizard finished intentionally

* fix: remove process.exit() — stdin.pause() is sufficient

process.exit() can truncate buffered stdout/stderr in piped or redirected
usage before streams fully flush. The stdin.pause() in promptChoiceList
cleanup already lets the event loop drain naturally; the forced exit was
unnecessary backstop that introduced data-loss risk.

Author: PatrickSys

bin/lib/init-flow.mjs

@@ -122,10 +122,11 @@ export function createCmdInit(ctx) {
     writeManifest(ctx.planningDir, manifest);
     console.log('  - wrote generation manifest');
 
-    console.log('\nGSDD initialized.');
+    console.log('\n\x1B[1m\x1B[32m✓ GSDD initialized.\x1B[0m');
     printInitSummary(interactiveSession.config ?? buildDefaultConfig({ autoAdvance: isAuto }));
     console.log('Next: choose the starting lane that fits your repo and current scope:\n');
     printPostInitRouting(interactiveSession.selectedRuntimes);
+    console.log('\nSetup complete — this session will now exit.');
   };
 }
 

bin/lib/init-prompts.mjs

@@ -198,6 +198,7 @@ export async function promptChoiceList({ input, output, title, hint = 'Use arrow
     const cleanup = () => {
       input.off('keypress', onKeypress);
       if (typeof input.setRawMode === 'function') input.setRawMode(previousRawMode);
+      if (typeof input.pause === 'function') input.pause();
     };
 
     const onKeypress = (_, key = {}) => {